Texas Instruments LP3995 Handleiding
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OUT
IN
EN
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2
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BYPASS
1
10 nF
1 µF
1 µF
Input
Enable
GND
LP3995
Load
C
IN
C
BP
C
OUT
(C3)
(A1)
(B2)
(A3)
(C1)
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LP3995
SNVS179F–FEBRUARY2003–REVISEDSEPTEMBER2015
LP3995Micropower150-mACMOSVoltageRegulatorWithActiveShutdown
1Features3Description
TheLP3995linearregulatorisdesignedtomeetthe
1
•InputRange:2.5Vto6V
requirementsofportablebattery-powered
•AccurateOutputVoltage:±75mV/2%
applications,providinganaccurateoutputvoltage
•TypicalDropoutwith150mALoad:60mV
withlownoiseandlowquiescentcurrent.Ideally
suitedforpoweringRFandanalogdevices,this
•VirtuallyZeroQuiescentCurrentWhenDisabled
devicecanalsobeusedtomeetmoregeneralcircuit
•LowOutputVoltageNoise
needsinwhichafastturnoffisessential.
•StableWitha1-µFOutputCapacitor
Forbattery-poweredapplicationsthelowdropoutand
•OutputCurrent:150mA
lowgroundcurrentprovidedbythedeviceallowsthe
•FastTurnon:30µs(Typical)
lifetimeofthebatterytobemaximized.The
Enable(/Disable)controlfunctionallowsthesystemto
•FastTurnoff:175µs(Typical)
furtherextendthebatterylifetimebyreducingthe
•StableWithCeramicCapacitor
powerconsumptiontovirtuallyzero.Thisfunction
•LogicControlledEnable
alsoincorporatesanactivedischargecircuitonthe
•FastTurnon
outputforfasterdeviceshutdown.Wherethefast
turnoffisnotrequiredtheLP3999linearregulatoris
•ActiveDisableforFastTurnoff
recommended.TheLP3995alsofeaturesinternal
•Thermal-OverloadandShort-CircuitProtection
protectionagainstshort-circuitcurrentsand
•−40to+125°CJunctionTemperatureRangefor
overtemperatureconditions.
Operation
TheLP3995isdesignedtobestablewithsmall1-µF
ceramiccapacitors.ThesmalloutlineoftheLP3995
2Applications
DSBGApackagewiththerequiredceramiccapacitors
canrealizeasystemapplicationwithinminimalboard
•GSMPortablePhones
area.Performanceisspecifiedfora−40°Cto+125°C
•CDMACellularHandsets
temperaturerange.
•WidebandCDMACellularHandsets
TheLP3995isavailableinfixedoutputvoltagesfrom
•BluetoothDevices
1.5Vto3.3V,inDSBGAorWSONpackages.For
•PortableInformationAppliances
otherpackageoptionsoroutput-voltageoptions,
contactyourlocalTIsalesoffice.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE
DSBGA(5)1.502mm×1.045mm(MAX)
LP3995
WSON(6)3.29mm×2.92mm(NOM)
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
TypicalApplicationCircuit
1
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP3995 |
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